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