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