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