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