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