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