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