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