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