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