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