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