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