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