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