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