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