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