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