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