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