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