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