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