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