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