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