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