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