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