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