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