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