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