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