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