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