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