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