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