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)(17,18)(19,25)(20,24)(21,26)(22,23)(27,32)(28,29)(30,31)(33,34,38,40)(35,39,44,41)(36,42,47,45)(37,46,48,43)(3,9)(7,13)(10,15)(14,16)(17,19)(18,21)(20,28)(22,26)(23,25)(24,32)(27,30)(29,31)(33,35)(34,39)(36,46)(37,45)(38,44)(40,41)(42,48)(43,47) involution — undirected(2,6)(7,13)(8,11)(14,16)(18,23)(19,26)(24,31)(27,28)(34,40)(35,44)(42,45)(43,46) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,19)(18,21)(20,27)(22,26)(23,25)(24,29)(28,30)(31,32)(33,35)(34,41)(36,43)(37,45)(38,44)(39,40)(42,48)(46,47) involution — undirected(1,3,5,9)(2,7,6,13)(4,10,12,15)(8,14,11,16)(17,20)(18,24)(19,27)(21,29)(22,30)(23,31)(25,32)(26,28)(33,36,38,47)(34,42,40,45)(35,43,44,46)(37,41,48,39)(1,4,5,12)(2,8,6,11)(3,10,9,15)(7,14,13,16)(17,21)(18,19)(20,29)(22,25)(23,26)(24,27)(28,31)(30,32)(33,37,38,48)(34,43,40,46)(35,45,44,42)(36,39,47,41)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.