One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,11)(5,6)(8,12)(9,13)(10,16)(14,15)(17,18)(19,25)(20,24)(21,26)(22,23)(27,28)(29,31)(30,32)(33,34)(35,42)(36,39)(37,40)(38,41)(43,48)(44,47)(45,46) involution — undirected(3,9)(7,13)(10,15)(14,16)(17,18)(19,21)(20,24)(22,23)(25,26)(27,30)(28,32)(29,31)(33,35,38,36)(34,39,41,42)(37,43,46,44)(40,47,45,48)(2,6)(7,13)(8,11)(14,16)(18,23)(19,26)(24,31)(27,32)(33,36,38,35)(34,39,41,42)(37,44,46,43)(40,47,45,48)(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,19)(18,21)(20,27)(22,26)(23,25)(24,30)(28,31)(29,32) involution — undirected(1,3,5,9)(2,7,6,13)(4,10,12,15)(8,14,11,16)(17,20,22,29)(18,24,23,31)(19,27,26,32)(21,30,25,28)(33,34)(35,42)(36,39)(37,45)(38,41)(40,46)(43,47)(44,48)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,21)(18,19)(20,28)(22,25)(23,26)(24,32)(27,31)(29,30)(33,37)(34,40)(35,43)(36,44)(38,46)(39,47)(41,45)(42,48) 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.