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