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