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