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)(11,15)(12,13)(14,16)(17,18)(19,27)(20,24)(21,25)(22,26)(23,30)(28,41)(29,37)(31,36)(32,38)(33,39)(34,40)(35,43)(42,47)(44,46)(45,48) involution — undirected(2,6)(7,8)(10,13)(11,16)(17,19,21,30)(18,23,25,27)(20,28,32,43)(22,29,34,31)(24,35,38,41)(26,36,40,37)(33,44,45,42)(39,47,48,46)(1,3,5,4)(2,7,6,8)(9,11,12,16)(10,14,13,15)(17,20)(18,24)(19,28)(21,32)(22,33)(23,35)(25,38)(26,39)(27,41)(29,44)(30,43)(31,42)(34,45)(36,47)(37,46)(40,48)(1,4,5,3)(2,8,6,7)(10,13)(14,15)(19,29)(20,32)(22,34)(23,36)(24,38)(26,40)(27,37)(28,42)(30,31)(35,46)(41,47)(43,44)(2,6)(7,8)(10,13)(14,15)(18,25)(20,32)(23,27)(26,40)(28,43)(33,45)(36,37)(42,44) 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.