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