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