One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,13)(5,9)(6,10)(8,12)(11,16)(14,15)(17,18)(19,26)(20,28)(21,25)(22,23)(24,30)(27,31)(29,32)(33,34)(35,41)(36,40)(37,45)(38,42)(39,47)(43,46)(44,48) involution — undirected(1,3,6,11)(2,7,10,16)(4,5,12,15)(8,14,13,9)(17,18)(19,26)(20,24)(21,25)(22,23)(27,29)(28,30)(31,32)(33,35)(34,37)(36,43)(38,45)(39,46)(40,48)(41,42)(44,47)(3,11)(4,12)(7,16)(8,13)(18,23)(19,25)(24,28)(27,32)(33,36,38,47)(34,39,42,40)(35,43,45,44)(37,46,41,48)(1,4)(2,8)(3,5)(6,12)(7,14)(9,16)(10,13)(11,15)(17,19)(18,21)(20,27)(22,25)(23,26)(24,31)(28,29)(30,32)(33,36)(34,40)(35,44)(37,46)(38,47)(39,42)(41,48)(43,45) involution — undirected(1,2)(3,7)(4,8)(5,14)(6,10)(9,15)(11,16)(12,13)(17,20,22,30)(18,24,23,28)(19,27,25,32)(21,31,26,29)(33,37)(34,35)(36,46)(38,41)(39,43)(40,44)(42,45)(47,48)(1,5)(2,9)(3,12)(4,11)(6,15)(7,8)(10,14)(13,16)(17,21)(18,25)(19,23)(20,29)(22,26)(24,27)(28,32)(30,31)(33,35)(34,41)(36,43)(37,42)(38,45)(39,48)(40,46)(44,47) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.