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