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