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