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