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